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Re: Bad interaction between CVS and ssh due to libc


From: Paul Jarc
Subject: Re: Bad interaction between CVS and ssh due to libc
Date: Fri, 09 Aug 2002 14:25:20 -0400
User-agent: Gnus/5.090008 (Oort Gnus v0.08) Emacs/21.2 (i686-pc-linux-gnu)

Derek Robert Price <address@hidden> wrote:
> I assume they have different file table entries in the kernel
> because stderr can be set to nonblock without doing the same to
> stdout.  I need to know when the two file descriptors point to the
> same file table entry (i.e. $ cvs <whatever> 2>&1).

Ah.  So frob the flags on one of them and see if the other one changes
too; then restore the original flags.  This still isn't perfect, for
the same reason that the problem exists: another process with a copy
of the same descriptor could be messing around with flags at the same
time.  But that seems unlikely in the cases where the problem appears.


paul



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